Circulating gas burner



July 1o, 192s.

. J. M. AXTELL ET AL CIRGULATING GAS BURNER Filed Nov. 21, 1925' nu,... .um A. d A m nl? Patented July 10, 1928.

unirse scr-ara s i 1,676,472 Perser sferica. g

JAYMAXTELL AND'FREDERICK G. vonv Horan, orroizr WORTH, TEXAS, AssIGNoRs v'.io .et-v. BURNER COMPANY, or FORT WORTH, mnxasa coaroiia'rion or TEXAS.

ciRCULATinG.

Application ined November yQur inventionrelates to gas burners and more particularly to circulating gas burners; and the object isv to providepipes for supplying the gas tothe burners `which are adapted to cause a circulation of the gas throughout the lengths of the burner pipes so that the pressure Will be uniform throughout the length of the burner pipes. The ad-K` vantage of this provision is that the jets of iiame Willbe uniform and not Weak at points remote from the entiance of the gas into the burner pipes. Our present invention is an improvement on the patents granted to us on September 1, 1925, for gas burners, Nos. 1,551,532 and 1,552,190. Other objects and advantages will be fully explained in the following description and the invention Will be more particularly pointed out in the claims.

. Reference is had to the accompanying drawings Which form a part of this lapplication.

Fig. 1 is a longitudinal section of the burner pipes.

Fig. 2'is a cross-section of the pipes and a vertical sec-tion of a pair of burner tips.v

Fig. 3 is a similar view to the viewlof Fig. 2, showing a variation in the form of burneg tips.

Similar characters of reference are used to indicate the same parts throughout the several views.

The drawing shows a supply pipe 1 provided with a cock or valve 2. The burner is provided with a casting 3 which is screwed on the pipe 1. The burner is provided With an inner circulating member 4 and an outer circulating member 5. The casting 3 has a series of graduated cavities in Which the burner pipes are screwed. A feed pipe G is screwed into the smallest cavity and the inner circular member 4 has the end thereof screwed into the next larger cavity and the outer circular member 5 has the end screwed into the largest cavity in t-he casting 3 which serves as a holder or support for the circulating members. The outer circulating member 5-is provided with a cap 'i'. The member 5 is to be tapped at suitable places into the outer circulating member 5 for burner tips 8 of the ordinary type or for tips 9. It is apparent that tips of the forms 8 and 9 can be varied and that the tips may be dispensed with and orifices drilled in the pipes at the required angle for distribution eas suenan; ,Y

2i, .1925`. serial' iro. 70,475. i

in order to secure proper combustion. The tips or nozzles may be distributed throughout the lengthof the outer circulating mem-A ber 5. Gas/ is to be delivered to the inner circulating member 4 by the feed nozzle 6. Gas escapes from the end of the member 4 and Willbe directed back into the outer meinber 5 to be fed.to lthe various burnertips. The gas which is not consumed through the burner tips `will be directed back into member 4 through the perforations 10 and the nozzle 6 Will cause a suction because the pressure through the nozzle Will be greater than the pressure coming from the perforations 10 and the gas from the perforations -10 Willbe lcaught up and forced along Wit-h the fresh supply coming through the nozzle 6. In this manner there will be maintained apressure or head of gas throughout the pipe 4 and the pipe 5 so that t-he pressure Will be imiform and the pressure Will be uniform through the orilices of all thetips or nozzles. With sui'licieiit head or pressure to make the feeding of gas through the tips or nozzles uniform.

What We claim, is,- Y

` 1. A l circulating burner comprising a Thevgas is thus stored in the pipe holder, an outer circulating member rigid Y With said holder and provided with burner nozzles, a circulating member Within said outer member' rigid with said holder and v open at the opposite end for permitting gas'v to enter said outer member and having perforations near said holder for permitting gas to entertherein from said outer member, and a feed nipplerigid With said holder for supplying rgas to said inner member and projecting beyond said perforations for ai'dling in directinggas from the outer to theV inner member. v

2. A circulating lgas burner comprising a holder, an outer circulating member rigid with said holder and provided with burner nozzles, a circulating member Within said* outer member rigid With said holder and open at the opposite end for permitting gas to enter said outer member and having perforations near said holder for permitting gas to enter theieinto from said outer member, saidv outer and inner members serving to maintain a head of gas and tending to equalize the pressure throughout both members, and a feed nipple connected With Va supply sourceof gas and projected beyond :eziid periorzitions und tending to Create suction for drawing gas through said perforations. n

3. A Circulating burner Comprising a burner tube provioed With burner nozzles and an inner circulating and distributing pipe located Within said tube und` spaced therefrom and open at one end for supplying gus to said tube, a kfeed nipple for sup*- plying'gas to said Circulating land distributing pipe projecting Within said pipe, and means 'for sealing said burner tube about the receivingl end oi said pipe und holding the same in spaced relation to said pipe and limer/2 for sealingsaid pipe about said feed nipple and holding the saine in lspaced relation to e -ffor utilizing'. the draftthrough the feed nipple to draw gas through said intake openings into said circulatingl und distributmg P1P@- fIn testimony whereof, We set our hands, this 31st day of October, 1925.

YJAY M. AXTELL. FREDERICK VGr.' VGN p HOFEN. 

